Cortez

I need help if anyone out there can help me. I am researching my great great parents but need some advice. I was told that my great great grandfather and grandmother were born at Agua Gorda De Los Patos. This Rancho is right on the line of Zacatecas but....Ojuelos de Jalisco is really close to the Rancho. My mother said that it's posbile that they were registered in Ojuelos since it was a walking distance to the town but like I said....the rancho is on the line of Zacatecas. Would they allowe them back then to registere at Ojuelos Jalisco?

Please Advice.